Menninger, MEHN ihng uhr, Karl Augustus (1893-1990), was an American psychiatrist whose writings influenced public attitudes toward mental illness. He helped found the Menninger Clinic, a leading psychiatric center. His most influential book was The Human Mind (1930). His other works include Man Against Himself (1938), Love Against Hate (1942), The Crime of Punishment (1968), and Whatever Became of Sin? (1973).